Periodic — DNS & Email Security Monitoring Platform
Continuous domain security monitoring and remediation
Test Your Domain
Enter any domain to instantly check SPF, DMARC, DKIM, DNSSEC, and transfer lock configurations. See risk levels and actionable improvement recommendations at a glance.
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Server & Network
Real-time health checks for servers, switches, routers, and firewalls
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Website & SSL
Uptime monitoring with SSL certificate expiration alerts
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Email Delivery
SMTP flow monitoring and mail queue health checks
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Cloud Services
Microsoft 365, Google Workspace, and AWS service status
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Backup Verification
Automated backup job validation and completion alerts
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Security Events
Intrusion detection, failed login tracking, and threat alerts
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Performance Trends
CPU, memory, disk usage trends with threshold-based alerting
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Key Features
- Instant domain security assessment
- Continuous DNS monitoring with alerts
- DMARC/SPF/DKIM authentication verification
- Cloudflare security configuration monitoring
- Remediation project tracking and management
- Brand protection and domain impersonation detection
Visualize Your Domain Security
Is your domain secure? Email spoofing, DNS hijacking, and unauthorized configuration changes can become serious business risks if discovered too late.
Periodic automates continuous monitoring of DNS configurations and email security, instantly detecting issues and tracking them through to remediation.
How Periodic Works
Periodic manages domain security in five steps. Try the interactive demo above to see the actual screens.
1. Test Your Domain
Enter any domain to instantly check SPF, DMARC, DKIM, DNSSEC, and transfer lock configurations. See risk levels and actionable improvement recommendations at a glance.
2. Monitor Everything
See the health of all DNS checks on the dashboard at a glance. Track OK, unauthorized, and propagating statuses in real time, with instant alerts when issues arise.
3. Deep Dive into Checks
View per-resolver responses, expected value comparisons, and consensus status for each DNS check. Track the impact of changes through the recent history timeline.
4. Track Remediation
Visualize improvement with before/after security score comparisons. Manage DMARC rollout progression and project statuses to ensure continuous security improvement.
5. Protect Your Brand
Automatically detect domain impersonation through homoglyph substitution, typosquatting, and TLD swaps. Collect forensic evidence (DNS, WHOIS, HTTP headers, screenshots) and manage the full takedown workflow from detection to resolution.
What We Monitor
Periodic monitors the following security elements:
- SPF — Sender server legitimacy verification
- DMARC — Email authentication policy enforcement
- DKIM — Email signature verification
- DNSSEC — DNS response integrity protection
- MX Records — Mail delivery configuration
- Transfer Lock — Domain transfer protection status
- Cloudflare Settings — WAF, SSL, HSTS, and other security configurations
Brand Protection
Periodic's brand protection features detect and respond to domain impersonation targeting your brand:
- Permutation Generation — Homoglyph substitution, typosquatting, TLD swaps, keyboard adjacency, and vowel/consonant swaps
- Content Fingerprinting — Fetches live content on detected domains to identify active phishing or brand abuse
- Evidence Collection — Captures HTTP headers, WHOIS/RDAP data, and content snapshots as timestamped evidence
- Takedown Workflow — Matter number tracking (ESPER-YYYY-NNNN), status progression from detection through resolution
- Exclusion Filtering — Keyword-based exclusions to reduce false positives at generation and detection time
Visit Periodic
Access the live platform at periodic.esolia.co.jp.
We're Here to Help
Let us help you strengthen your domain security. Contact us below with any questions about Periodic or to discuss implementation.